12355222 has 16 divisors (see below), whose sum is σ = 20279952. Its totient is φ = 5598720.

The previous prime is 12355199. The next prime is 12355223. The reversal of 12355222 is 22255321.

12355222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12355193 and 12355202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12355223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8878 + ... + 10174.

It is an arithmetic number, because the mean of its divisors is an integer number (1267497).

Almost surely, 2^12355222 is an apocalyptic number.

12355222 is a deficient number, since it is larger than the sum of its proper divisors (7924730).

12355222 is a wasteful number, since it uses less digits than its factorization.

12355222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743.

The product of its digits is 1200, while the sum is 22.

The square root of 12355222 is about 3514.9995732574. Note that the first 3 decimals coincide. The cubic root of 12355222 is about 231.1799600890.

Subtracting 12355222 from its reverse (22255321), we obtain a palindrome (9900099).

The spelling of 12355222 in words is "twelve million, three hundred fifty-five thousand, two hundred twenty-two".